Quadratics and Complex Numbers — Test

Question 1

The length of a rectangle is three times the width. The area of the rectangle is 108 sq in. What is the width of the rectangle?

Revolt · Accepted Answer

6 in.

Question 2

Which equation is the inverse of open paren x minus 4 close paren squared minus 2 thirds is equal to 6 y minus 12 ?

Revolt · Accepted Answer

y is equal to 4 plus or minus square root of 6 x minus 34 thirds end root

Question 3

Which equation is y is equal to 9 x squared plus 9 x minus 1 rewritten in vertex form?

Revolt · Accepted Answer

y is equal to 9 times open paren x plus 1 half close paren squared minus 13 fourths

Question 4

Based on the graph, how many distinct real number solutions does the equation x cubed plus 6 x squared plus 12 x plus 8 is equal to 0 have?

Revolt · Accepted Answer

one real number solution

Question 5

The graph shows the height of a projectile t seconds after it is launched. If acceleration due to gravity is −16 ft/s2, which equation models the height of the projectile correctly? h of t is equal to A t squared plus v t plus h sub 0

Revolt · Accepted Answer

h of t is equal to negative 16 t squared plus 32 t plus 5

Quadratics and Complex Numbers — Test Answers

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